Ferdinand keller



F. KELLER.

DESK

(No Model.)

No. 533,470. Patented Feb. 5,1895.

I J Inventor. J Q

L Attnrneyf UNITED STATES PATENT rrion.

FERDINAND KELLER, OF PHILADELPHIA, PENNSYLVANIA.

DESK.

SPEGIFICATION forming part of Letters Patent No. 533,470, dated February 5, 1 895.

Application filed April 27, 1894- Serial No. 5091 (N0 model) To all whom it may concern:

Be it known that I, FERDINAND KELLER, a citizen of the United States, residing at Philadelphia, county of Philadelphia, and State of Pennsylvania, have invented a new and usef ul Improvement in Desks, of which the following is a full, clear, and exact description, reference being had to the accompanying drawings, which form a part of this specifica tion.

My invention relates to that class of desks in which a swinging lid is used, and supports projecting from the body of the desk upon which the lid rests when swung into an open position. Grooves or ways are provided in the frame of the desk in which these supports can slide, and, when the desk is closed, be pushed so that the other end will lie flush with the surface of the body of the desk. In the ordinary construction, these supports are manipulated by the user independent of the desk lid, and my invention has for its object to cause the withdrawal or insertion of the supports by the opening or closing of the lid and supports in the manner hereinafter particnlarly described, whereby the opening of the lid causes the supports to be withdrawn into position to support the lid, while the closing of the lid causes the supports to be drawn into the grooves, and thus the movement of the lid automatically controls the position of the supports.

In the drawingsz-Figure 1 is a perspective view of a desk with my improved attachment thereto. Fig. 2 is a section on line w0a, Fig. 1, the dotted lines showing position of movable parts when the lid is closed. Fig. 3 is a detached perspective view of the slide and the link. Fig. 4 is a section on line ww,Fig. 2.

A is the upper part of the body of the desk, and B the lower part of the body of the desk; (3, the desklid hinged to the body at c, c, in the ordinary manner.

D, D, are the supports, and d, cl, are the grooves in the body of the desk, a groove for each support, and in which the supports are adapted to slide so as to bring their outer surface flush with or within the outer surface of the body of the desk when not in use and in which the supports can be withdrawn so that they will project a sufiicient distance beyond the surface of the body of the desk to form supports for the lid, when opened. As shown in Fig. 1, the front surface, a, of desk body A, is shown inclined, but the same may be vertical if the invention be used with a type of desk in which the swinging lid inclosing does not swing beyond the vertical.

E are links, two being shown. One end of each link is pivotally connected to the lid G, and the other end is pivotally connected to one of the supports, D, the links being arranged one on each side of the lid, as shown in the drawings. The link is pivotally connected to the lid by means of a plate, 6, to which is fixedly connected the pin e which passes through an orifice in the side of the lid, through an orifice in link E, and into an orifice in the surface of the lid beyond the link. The other end of the link E is pivotally secured by a screw or rivet to one end of an offset or angular bracket F, the other end of which rests in a recess in the support 1), to which it is secured by a rivet'or screwf.

G is a recess in the lid in which the outer portion of the link E rests when the lid is open. (See full lines Fig. The outer walls of the top A are recessed, as shown at g, to allow the free movement of the link, the orifice thus formed being of such shape and dimension that the link will abut against its inclined upper edge when in its extreme rearward position. By this construction the link is entirely inclosed when the lid is shut, thus preventing its interference with articles in the desk adjacent to the side walls thereof.

The construction above described for pivotally connecting the support and link is such that the groove (1 may be offset with respect to the orifice within which the link is adapted to work, thereby confining the support to its proper longitudinal movement and preventing its vertical displacement.

The ofiset bracket F rests upon a ledge f, upon which it slides. The dotted lines show the position of the lid, link and support, when the lid is closed, and the full lines show the position of the same parts, when the lid is opened.

Having now fully described my invention, what I claim, and desire to protect by Letters Patent, is

1. In a desk, in combination, a lid adapted to swing, a support adapted to rest under and IOO support said lid when opened, the body of the desk having a groove in which said support is adapted to slide, a link pivoted at one end to the lid, a bracket one part of which is adapted to be secured to the other end of the link and the other part to the support, the support having a recess for the reception of the bracket, the length of said link being such that in swinging the lid in one direction, the support in part or in whole is moved beyond the body of the desk, and in the other direction the end of the support is brought in line with or within the line of the outer surface of the desk, the wall of the desk being provided with a V shaped orifice against the inclined upper end of which the link is adapted to abut when in its extreme rearward position, said groove and orifice being in different vertical planes.

2. In a desk, in combination, a lid adapted to swing, a support adapted to rest under and support said lid when opened, the body of the desk having a groove in which said support is adapted to slide, a link, the lid having an inset for the reception of the link, a pin passing through the lid, the inset and a hole in the link whereby the latter is pivoted to the lid at one end, an ofiset bracket one part of which is adapted to be secured to the other end of the link and the other part to the support, the support having a recess for the receptionof the bracket, the length of said link being such that in swinging the lid in one direction, the support in part or in whole is moved beyond the body of the desk, and in the other direction the end of the support is brought in line with or within the line of the outer surface of the desk, the wall of the desk being provided with a V'shaped orifice against the inclined upper end of which the link is adapted to abut when in its extreme rearward position, said groove and orifice being in difierent vertical planes.

In testimony of which invention I have hereunto set my hand.

FERDINAND KELLER.

Witnesses:

FRANCES ELLIS, FRANK S. Russian. 

